Apparatus

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sensors Mode-S transponder

A4C6B6

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N407AV · operated by WESTWIND SCHOOL OF AERONAUTICS PHOENIX LLC DBA, UNITED AVIATE ACADEMY

Hex
A4C6B6
Octal
51143266
Decimal
10,798,774
Country
US
Tail
N407AV
Type
SR20
Transponder active on ground
Flights observed
146
Distinct callsigns
1
Country
US
Last broadcast
2h ago

Last known position

Most recent position reported by Mode-S A4C6B6.

Country allocation

The ICAO 24-bit address A4C6B6 falls within the block assigned to United States (US) by ICAO Annex 10, Volume III. Every aircraft registered in United States receives a permanent address from this block at the time of registration; the address stays with the airframe even if the aircraft is re-registered to a different operator within the country.

Callsign history 1 distinct

Callsign Airline Flights Last seen
VAR407 - 146 2026-06-03

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-06-03 VAR407 GYR → GYR Jun 3, 00:40 UTCJun 3, 02:15 UTC1h 35m
2026-06-01 VAR407 GYR → GYR Jun 1, 23:45 UTCJun 2, 02:05 UTC2h 20m
2026-05-31 VAR407 - May 31, 00:35 UTCMay 31, 01:11 UTC36m
2026-05-25 VAR407 GYR → GYR May 25, 23:54 UTCMay 26, 01:34 UTC1h 40m
2026-05-25 VAR407 GYR → GYR May 25, 19:15 UTCMay 25, 20:59 UTC1h 45m
2026-05-24 VAR407 - May 24, 23:00 UTCMay 24, 23:46 UTC46m
2026-05-24 VAR407 GYR → GYR May 24, 18:15 UTCMay 24, 21:00 UTC2h 45m
2026-05-23 VAR407 GYR → GYR May 23, 20:40 UTCMay 23, 22:05 UTC1h 25m
2026-05-22 VAR407 GYR → GYR May 22, 16:35 UTCMay 22, 17:50 UTC1h 15m
2026-05-21 VAR407 GYR → GYR May 21, 22:25 UTCMay 22, 00:30 UTC2h 5m
2026-05-21 VAR407 - May 21, 20:55 UTCMay 21, 21:05 UTC10m
2026-05-21 VAR407 - May 21, 19:00 UTCMay 21, 20:50 UTC1h 50m
2026-05-21 VAR407 - May 21, 17:15 UTCMay 21, 17:35 UTC20m
2026-05-21 VAR407 - May 21, 15:55 UTCMay 21, 16:10 UTC15m
2026-05-21 VAR407 - May 21, 05:35 UTCMay 21, 06:05 UTC30m
2026-05-21 VAR407 - May 21, 05:10 UTCMay 21, 05:20 UTC10m
2026-05-21 VAR407 GYR → GYR May 21, 04:55 UTCMay 21, 05:00 UTC5m
2026-05-21 VAR407 GYR → GYR May 21, 04:25 UTCMay 21, 04:30 UTC5m
2026-05-21 VAR407 GYR → GYR May 21, 02:15 UTCMay 21, 02:50 UTC35m
2026-05-20 VAR407 GYR → GYR May 20, 22:30 UTCMay 21, 00:00 UTC1h 30m
2026-05-20 VAR407 GYR → GYR May 20, 19:25 UTCMay 20, 19:40 UTC15m
2026-05-20 VAR407 GYR → GYR May 20, 16:15 UTCMay 20, 16:50 UTC35m
2026-05-20 VAR407 GYR → GYR May 20, 13:40 UTCMay 20, 14:35 UTC55m
2026-05-19 VAR407 GYR → GYR May 19, 23:30 UTCMay 20, 01:00 UTC1h 30m
2026-05-19 VAR407 GYR → GYR May 19, 18:20 UTCMay 19, 19:50 UTC1h 30m
2026-05-19 VAR407 GYR → GYR May 19, 01:05 UTCMay 19, 02:35 UTC1h 30m
2026-05-18 VAR407 - May 18, 23:10 UTCMay 18, 23:50 UTC40m
2026-05-18 VAR407 - May 18, 21:25 UTCMay 18, 22:15 UTC50m
2026-05-18 VAR407 GYR → GYR May 18, 17:35 UTCMay 18, 19:05 UTC1h 29m
2026-05-18 VAR407 GYR → GYR May 18, 14:30 UTCMay 18, 15:30 UTC1h 0m
2026-05-17 VAR407 GYR → GYR May 17, 18:40 UTCMay 17, 20:05 UTC1h 25m
2026-05-16 VAR407 GYR → GYR May 16, 17:45 UTCMay 16, 20:35 UTC2h 50m
2026-05-16 VAR407 GYR → GYR May 16, 14:05 UTCMay 16, 16:05 UTC2h 0m
2026-05-15 VAR407 GYR → GYR May 15, 19:30 UTCMay 15, 20:30 UTC1h 0m
2026-05-15 VAR407 GYR → GYR May 15, 15:40 UTCMay 15, 17:40 UTC2h 0m
2026-05-15 VAR407 GYR → GYR May 15, 01:50 UTCMay 15, 02:50 UTC1h 0m
2026-05-14 VAR407 GYR → GYR May 14, 21:40 UTCMay 14, 23:05 UTC1h 25m
2026-05-14 VAR407 GYR → GYR May 14, 18:35 UTCMay 14, 20:10 UTC1h 35m
2026-05-14 VAR407 GYR → GYR May 14, 15:25 UTCMay 14, 16:25 UTC1h 0m
2026-05-13 VAR407 - May 13, 22:35 UTCMay 14, 00:00 UTC1h 25m
2026-05-13 VAR407 GYR → GYR May 13, 17:15 UTCMay 13, 18:00 UTC45m
2026-05-13 VAR407 GYR → GYR May 13, 15:15 UTCMay 13, 16:10 UTC55m
2026-05-13 VAR407 GYR → GYR May 13, 13:31 UTCMay 13, 14:20 UTC50m
2026-05-13 VAR407 - May 13, 03:25 UTCMay 13, 04:40 UTC1h 15m
2026-05-13 VAR407 GYR → GYR May 13, 00:20 UTCMay 13, 02:25 UTC2h 5m
2026-05-12 VAR407 GYR → GYR May 12, 19:00 UTCMay 12, 20:10 UTC1h 10m
2026-05-09 VAR407 - May 9, 22:39 UTCMay 10, 00:05 UTC1h 25m
2026-05-09 VAR407 - May 9, 19:45 UTCMay 9, 20:05 UTC20m
2026-05-09 VAR407 - May 9, 18:50 UTCMay 9, 19:05 UTC15m
2026-05-08 VAR407 GYR → GYR May 8, 23:50 UTCMay 9, 01:55 UTC2h 5m

About Mode-S

A Mode-S transponder code (also called an "ICAO 24-bit address" or "hex code") is a 6-character hexadecimal identifier permanently assigned to an aircraft when it's first registered. Unlike callsigns (which change with each flight) or registrations (which can change if an aircraft is sold internationally), the Mode-S address stays with the airframe for the life of the aircraft in that country.

Every ADS-B transmission from an aircraft includes its Mode-S address, making it the most reliable way to identify a specific airframe. Flight-tracking services like Apparatus use the Mode-S address as the primary key for tying position broadcasts, callsigns, and ownership records together.

Prefer a tail-number view? See the N407AV page for operator, model, and routing details .

Mode-S A4C6B6 frequently asked

What is Mode-S code A4C6B6?
A4C6B6 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N407AV.
Where is Mode-S A4C6B6 registered?
Mode-S code A4C6B6 is allocated to United States (US). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is A4C6B6 broadcasting right now?
Mode-S A4C6B6 is currently broadcasting from the ground.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A4C6B6, octal 51143266, decimal 10,798,774.
What flights does A4C6B6 operate?
Mode-S A4C6B6 has broadcast 1 distinct callsign, including VAR407.